Alert archive / Mississippi / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 266, NWS Jackson, MS

September 1, 20214 counties in Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Sep 1, 2021, 6:15 PM CDT for 4 counties in Mississippi. It was in force for 60 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Sep 1, 2021, 6:15 PM CDT (23:15 UTC)
Expired: Sep 1, 2021, 7:15 PM CDT
In force: 60 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Hail: 0.88 in
Wind: 60.0 mph

Counties Clarke County, MS, Jasper County, MS, Lauderdale County, MS, Newton County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 112 km from the middle of the area, began a volume at 23:16 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

Time	Report	Where	Remark
Sep 1, 6:23 PM CDT	TSTM WND DMG	3 Ene Newton, MS	STRUCTURAL DAMAGE AND DOWNED TREES REPORTED ALONG HIGHWAY 80 BETWEEN HICKORY AND NEWTON.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 11.3 hours before the alert went out and 122 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1115 J/kg
Mixed-layer CIN: -81 J/kg
Mixed-layer LCL: 1102 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 57 m²/s²
0-3 km storm-relative helicity: 72 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

739 
WUUS54 KJAN 012315
SVRJAN
MSC023-061-075-101-020015-
/O.NEW.KJAN.SV.W.0266.210901T2315Z-210902T0015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Jackson MS
615 PM CDT Wed Sep 1 2021

The National Weather Service in Jackson has issued a

* Severe Thunderstorm Warning for...
  Northern Jasper County in east central Mississippi...
  Newton County in east central Mississippi...
  Northern Clarke County in east central Mississippi...
  Lauderdale County in east central Mississippi...

* Until 715 PM CDT.

* At 614 PM CDT, severe thunderstorms were located along a line
  extending from near Snell to near Conehatta, moving south at 15
  mph.

  HAZARD...60 mph wind gusts and nickel size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Severe thunderstorms will be near...
  Snell and Increase around 620 PM CDT.
  Roberts around 705 PM CDT.
  Garlandville around 715 PM CDT.

Other locations impacted by these severe thunderstorms include
Montrose, Chunky and Hickory.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3207 8845 3210 8932 3257 8932 3242 8841
TIME...MOT...LOC 2314Z 340DEG 14KT 3222 8846 3242 8930 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

JNE

3 follow-up statements

231 
WWUS54 KJAN 012339
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
639 PM CDT Wed Sep 1 2021

MSC023-061-075-101-020015-
/O.CON.KJAN.SV.W.0266.000000T0000Z-210902T0015Z/
Jasper MS-Newton MS-Clarke MS-Lauderdale MS-
639 PM CDT Wed Sep 1 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM CDT
FOR NORTHERN JASPER...SOUTHERN NEWTON...NORTHERN CLARKE AND SOUTHERN
LAUDERDALE COUNTIES...

At 639 PM CDT, severe thunderstorms were located along a line
extending from 6 miles southeast of Snell to Lawrence, moving south
at 15 mph.

HAZARD...60 mph wind gusts and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

These severe storms will be near...
  Snell around 645 PM CDT.
  Garlandville around 720 PM CDT.

Other locations impacted by these severe thunderstorms include
Montrose, Chunky and Hickory.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3207 8845 3210 8932 3242 8932 3228 8843
TIME...MOT...LOC 2339Z 340DEG 14KT 3213 8842 3234 8926 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

JNE

895 
WWUS54 KJAN 012350
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
650 PM CDT Wed Sep 1 2021

MSC075-101-012359-
/O.CAN.KJAN.SV.W.0266.000000T0000Z-210902T0015Z/
Newton MS-Lauderdale MS-
650 PM CDT Wed Sep 1 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN NEWTON AND SOUTHERN
LAUDERDALE COUNTIES IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

LAT...LON 3207 8845 3210 8932 3222 8932 3222 8844
TIME...MOT...LOC 2349Z 000DEG 23KT 3208 8849 3211 8930 

$$

MSC023-061-020015-
/O.CON.KJAN.SV.W.0266.000000T0000Z-210902T0015Z/
Jasper MS-Clarke MS-
650 PM CDT Wed Sep 1 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM CDT
FOR NORTHERN JASPER AND NORTHERN CLARKE COUNTIES...

At 649 PM CDT, severe thunderstorms were located along a line
extending from 6 miles east of Sykes to 6 miles east of Pineville,
moving south at 25 mph.

HAZARD...60 mph wind gusts.

SOURCE...Emergency management. Several trees were reported down and 
         some structures were damaged along Highway 80 between 
         Newton and Hickory.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Stonewall, Sable, Middleton, Sykes, Garlandville, Rose Hill, Orange,
Snell and Montrose.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3207 8845 3210 8932 3222 8932 3222 8844
TIME...MOT...LOC 2349Z 000DEG 23KT 3208 8849 3211 8930 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...OBSERVED
MAX WIND GUST...60 MPH

$$

DL

152 
WWUS54 KJAN 020010
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
710 PM CDT Wed Sep 1 2021

MSC023-061-020019-
/O.EXP.KJAN.SV.W.0266.000000T0000Z-210902T0015Z/
Jasper MS-Clarke MS-
710 PM CDT Wed Sep 1 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN JASPER AND NORTHERN
CLARKE COUNTIES WILL EXPIRE AT 715 PM CDT...
    
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire. A Severe 
Thunderstorm Warning remains in effect for the southern portions of 
Jasper and Clarke counties.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Jackson.

LAT...LON 3207 8845 3210 8932 3222 8932 3222 8844
TIME...MOT...LOC 0009Z 340DEG 14KT 3203 8847 3206 8928 

$$

DL

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 1, 4:08 AM CDT	Heat Advisory	JAN	Adams, Bolivar, Carroll, Claiborne, Copiah, Franklin and 18 more	15 hr
Sep 1, 1:03 PM CDT	Special Weather Statement	JAN	Lowndes	42 min
Sep 1, 1:10 PM CDT	Severe Thunderstorm Warning	JAN	Lowndes	38 min
Sep 1, 2:37 PM CDT	Special Weather Statement	JAN	Noxubee	23 min
Sep 1, 2:46 PM CDT	Special Weather Statement	JAN	Clay	29 min
Sep 1, 3:13 PM CDT	Special Weather Statement	JAN	Choctaw	32 min
Sep 1, 3:25 PM CDT	Severe Thunderstorm Warning	JAN	Clay, Lowndes, Noxubee, Oktibbeha	50 min
Sep 1, 3:30 PM CDT	Severe Thunderstorm Warning	JAN	Attala, Choctaw, Winston	45 min
Sep 1, 3:34 PM CDT	Special Weather Statement	JAN	Carroll	41 min
Sep 1, 4:02 PM CDT	Special Weather Statement	JAN	Carroll, Holmes	43 min
Sep 1, 4:20 PM CDT	Severe Thunderstorm Warning	JAN	Kemper, Noxubee	40 min
Sep 1, 4:35 PM CDT	Severe Thunderstorm Warning	JAN	Attala, Carroll, Holmes, Leake, Madison, Yazoo	40 min
Sep 1, 4:42 PM CDT	Severe Thunderstorm Warning	JAN	Attala, Kemper, Lauderdale, Leake, Neshoba, Newton and 1 more	48 min
Sep 1, 5:00 PM CDT	Severe Thunderstorm Warning	JAN	Kemper	45 min
Sep 1, 5:04 PM CDT	Severe Thunderstorm Warning	JAN	Holmes, Humphreys, Yazoo	41 min
Sep 1, 5:07 PM CDT	Severe Thunderstorm Warning	JAN	Leake, Madison, Rankin, Scott, Yazoo	68 min
Sep 1, 5:19 PM CDT	Severe Thunderstorm Warning	JAN	Clarke, Jasper, Lauderdale, Newton	56 min
Sep 1, 5:34 PM CDT	Severe Thunderstorm Warning	JAN	Kemper, Lauderdale, Leake, Neshoba, Newton	34 min
Sep 1, 5:45 PM CDT	Severe Thunderstorm Warning	JAN	Madison, Yazoo	60 min
Sep 1, 6:05 PM CDT	Special Weather Statement	JAN	Clarke, Jasper, Rankin, Scott, Simpson, Smith	55 min
Sep 1, 6:14 PM CDT	Severe Thunderstorm Warning	JAN	Hinds, Madison, Rankin, Simpson	76 min
Sep 1, 6:37 PM CDT	Severe Thunderstorm Warning	JAN	Clarke, Jasper, Simpson, Smith	53 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2021 Every severe thunderstorm warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.